I wanted to design a Keychain / Bottle opener combo and print it in my 3D-printer. This is the design I came up with.
Note: The Abs material I use in my 3D-printer isnt strong enough to open a bottle so I am using a penny for strength.
I insert the penny manually when the print is at roughly 40% and the new print material on top of it seals it in place.
I am using these screws: Screws
With a comperable nut to hold the keys.
The STL files can be downloaded here if you would like to make one yourself: Download
If anyone would like me to make them a copy of the key holder, buy me dinner below and send your address to: firstname.lastname@example.org